The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2011
Filed:
Apr. 30, 2008
Harald Schmid, Emmingen, DE;
Harald Schmid, Emmingen, DE;
EBM-Papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Abstract
An electronically commutated asynchronous motor () features a stator (), a short-circuit rotor (), a controller (FOR) for field-oriented regulation of the motor (), a sensor magnet () in thermally conductive connection with the short-circuit rotor (), a rotor position sensor (A;') arranged at a predetermined distance (d) from the sensor magnet () to generate an output signal (HALL, U, U, U) that is dependent upon the spatial orientation of the sensor magnet (), and a temperature evaluation apparatus (CALC_T) configured to ascertain, during operation, from the sensor output signal (HALL, U, U, U), a temperature value (T) that characterizes a temperature (T_SM, T_S) in the motor ().